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Finding the Fourth Proportional to 60,047.76, 90,039.78 and 30,029.16

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Solution

The fourth proportional to 60,047.76, 90,039.78 and 30,029.16 is: 45,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,047.76 : 90,039.78 = 30,029.16 : x
  2. Step 2: Convert to fraction form
    60,047.76/90,039.78 = 30,029.16/x
  3. Step 3: Cross multiply
    60,047.76x = 90,039.78 × 30,029.16
  4. Step 4: Simplify right side
    60,047.76x = 2,703,818,959.98
  5. Step 5: Solve for x
    x = 2,703,818,959.98/60,047.76
  6. Step 6: Final answer
    x = 45,027.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.